Clock-pendulum



UNITED STATES PATENT OFFICE.

GEORGE P. REED, OE MELROSE, MASSACHUSETTS.

CLOCK-PENDU LUM.

SPECIFICATION forming part of Letters Patent No. 436,941, datedSeptember 23, 1890.

Application tiled November 6, 1889. Serial No. 329,409. (No model.)

To all whom it may concern:

Be it known thatl, GEORGE P. REED, acitizen of the United States,residing at Melrose, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements inOlock-Pendulu ms, of which the following is a specification.

In the accompanying drawing, A represents a clock-pendulum ball. Drepresents the rod. O represents a compound laminar curved plate or baror segment. D represents a movable weight. E represents movable and adjustable disks or wheels applied directly to and around the pendulum-rod.j

The laminar curve O is fastened to the pendulum-ball A by means of thescrews F. rIhe pendulum-ball has a series of holes G, drilled andtapped, of the right size to admit the screws E. The laminar curve alsohas a series of holes II made to coincide with the holes G in thependulum-ball.

The screws F are provided with a collar I, made to go freely thereon andto apply between the laminar curve and the'pendulumball A, so that thescrews E may be turned fully in and leave the amount ofspace between thelaminar curve and the pendulumball corresponding to the thickness of thecollar I. It is plain that by removingr the fastening-screws F from onehole to another in the pendulum-ball the distance from the end of thelaminar curve to the point of fastening will be correspondingly changed.IVeight D is applied to and around the pendulum-rod B, so as to movefreely thereon, the bottom or lower part. of this weight 'resting uponthe free-acting ends of the laminar curve, so that the changingtemperature will cause the free ends of the curve t-o move u p- Ward ordownward, and so cause the weight D to move in an opposite direction tothe movement caused by expansion or contraction of the rod, thuscompensating therefor.

It is evident that by changing the position of the fastening-screws F,as provided bythe different holes G in the pendulum-ball, the amount ofaction given to the free ends of the curve will be increased ordiminished, thus effecting the desired .adjustment to be obtained.

To assist and obtain a more exact adjustment, a series of disks E isapplied to and directly around the rod B, and it is evident that bytaking from or adding to these disks the adjustment may also beobtained.

l. In a clock-pendulum, the combination of the ball provided with twoseries of holes, one on each side of the line of suspension, the laminarcurved vbars or plates having similarly-arranged series, the holes ofthe bars and ball being oppositely placed in the same plane, screwsadapted to secure the plates and ball together, and the pendulumrod,substantially as set forth.

2. In a clock-pendulum, the combination of the ball provided with aseries of holes on each side of the line of suspension, the laminarcurved bars or plates having two series of holes similarly placed, eachhole in the bars being opposite a hole in the ball,screws adapted tosecure the plates and ball together, and intermediate collars,substantially as set forth.

3. In a clock-pendulum, the combination of the ball provided with twoseries of holes, the laminar curved bars or plates having also twoseries of holes, the holes of the bar l and ball being oppositely placedwith respect to the line of suspension and with respect to each other,screws adapted to secure the plates and ball together, and the pendulumrod provided with a movable weight resting on the free ends of saidplate, substantially as set forth.

GEORGE P. REED.

Witnesses:

EDWARD A. HUNTING, DANIEL B. WHITTIEE.

